Martha Patterson and Jared Followill

The Kings of Leon bass guitarist proposed to his model girlfriend in April with a custom-designed ring: a 4-carat cushion-cut diamond set on a diamond-covered band. "He has been wanting to settle down with her," a source told Us of the pair's engagement. "He wants to marry her." Followill got his wish in September when the couple made it official with a rustic "country wedding" in Tennessee.